-ey a-a a-b a-t aaa aab aae aaf aap aat aay ab- aba abb abe abf abp abt aby aea aeb aee aef aep aet aey af- afa afb afe aff afp aft afy ap- apa apb ape apf app apt apy at- ata atb ate atf atp att ay- aya aye ayf ayp ayt b-p baa bab bae baf bap bat bay bba bbb bbe bbf bbp bbt bby be- bea beb bee bef bep bet bey bfa bfb bfe bff bfp bft bfy bpa bpb bpe bpf bpp bpt bpy bta btb bte btf btp btt bty by- bya bye byf byp byt eaa eab eae eaf eap eat eba ebb ebe ebf ebp ebt eby eea eeb eee eef eep eet eey ef- efa efb efe eff efp eft ep- epa epb epe epf epp ept eta etb ete etf etp ett ety eya eye eyp eyt faa fab fae faf fap fat fay fba fbb fbe fbf fbp fbt fea feb fee fef fep fet fey ffa ffe fff ffp fft ffy fpa fpb fpe fpp fpt fpy fta ftb fte ftf ftp ftt fty fy- fya fyb fye fyp p-p paa pab pae paf pap pat pay pba pbb pbe pbf pbp pbt pby pea peb pee pef pep pet pey pfa pfb pfe pff pfp pft pfy ppa ppb ppe ppf ppp ppt pt- pta ptb pte ptf ptp ptt pty py- pya pyb pye pyf pyt taa tab tae taf tap tat tay tba tbb tbe tbf tbp tbt te- tea teb tee tef tep tet tey tfa tfb tfe tff tfp tft tpa tpb tpe tpf tpp tpt tta ttb tte ttf ttp ttt tty tya tye tyf typ tyt yaa yab yae yaf yap yat yay ybe ybf ybp yby yea yeb yee yef yep yet yey yfa yfe yff yft ypa ypf yta yte ytf ytp ytt yyb yye yyf yyt yyy